Ashopper in a supermarket pushes a cart with a force of 35.0 n directed at an angle of 25.08 below the horizontal. the force is just sufficient to balance various friction forces, so the cart moves at constant speed. (a) find the work done by the shopper on the cart as she moves down a 50.0-m-long aisle. (b) the shopper goes down the next aisle, pushing horizontally and maintaining the same speed as before. if the friction force doesn’t change, would the shopper’s applied force be larger, smaller, or the same? (c) what about the work done on the cart by the shopper?
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Physics, 22.06.2019 10:00
There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.
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Physics, 22.06.2019 14:30
Aracecar driver has to hold on tightly when going around a banked curve. approximately what is the centripetal force on a 2220.0 kg car going around a circle with a diameter of 190.0 meters at 25.0 m/s?
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During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?
Answers: 1
Ashopper in a supermarket pushes a cart with a force of 35.0 n directed at an angle of 25.08 below t...
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